Question

I’m trying to figure out a SQLquery.

I have a table of vote data with team_id, ip_address and date_voted fields and I need to return a count of votes for each team_id but only count the first 10 rows per IP address in any 24 hour period.

Answer 1

Haven’t had time to check, but the following should do the trick.

SELECT Yr, DoY, team_id, SUM(IF NbVote < 10, NbVote, 10) As FilteredVoteCount
FROM (
  SELECT YEAR(date_voted) AS Yr, DAYOFYEAR(date_voted) AS DoY, 
    team_id, 
    ip_address,
    COUNT(*) AS NbVotes
  FROM myTable
  -- WHERE here for some possible extra condition.
  GROUP BY YEAR(date_voted), DAYOFYEAR(date_voted), team_id, ip_address
)
GROUP BY Yr, DoY, team_id
ORDER BY Yr, DoY, team_id   -- or some other order may be desired.